CLVin. AROIDEiE. 
85 
iv. Philodendre^. Terrestrial herbs with entire or cordate leaves. 
Spadix shorter than the spathe, no appendage. Fruit enclosed in the spathe- 
tube. 
Spathe eventually deciduous; fruit a red drupe . 9. Agl.^onema 
Spathe persistent; drupes very small, not drup¬ 
aceous or red . . . . .10. Homalomena 
Limb of spathe deciduous in flower. 
Spathe contracted in the middle, below the 
limb . . . . . . .11. SCHISMATOGLOTTIS 
Spathe not contracted below the limb . .12, Piptospatha 
Flowers bisexual, no perianth except No. 13. 
V. Calle.e. Climbers often woody. Spadix with no appendage. Ovary 
truncate. Stigma linear, central. 
Perianth usually present, drupes distinct, red . 13. Anadendrum 
N o perianth; fruits crowded not drupaceous or 
red. 
Ovary i-celled, i-seeded. 
Leaves ovate to oblong-lanceolate entire . 14. Scindapsus 
O vary i-celled, 2-ovuied. 
Creeping plant; leaves ovate-cordate . . 15. Amydrium 
Ovary i-celled, i-seeded. 
Stout plants, climbing, large; entire or lobed 
leaves . . . . . . .16. Epipremnum 
Ovary 2-celled, cells i-seeded. 
Leaves large, lobed . . . . • 17> Epipremnopsis 
Ovary 2-celled, many-ovuled. 
Stout climbers; leaves entire or lobed . 18. Raphidophora 
vi. ORONTiEiE. Flowers bisexual. Perianth of 4 to 6 segments. Terres 
trial herbs. 
Prickly erect herbs, nearly stemless. 
Spadix much shorter than the long spathe, 
sessile. 
Leaves lobed . , . . . *19- Lasia 
Spadix nearly as long as spathe, stipitate. 
Leaves sagittate . . . . .20. Podolasia 
Spadix longer than spathe, sub-sessile. 
Leaves sagittate . . . . .21. Cyrtosperma 
vii. PoTHOiNE.E. Climbing plants not prickly. 
Flowers bisexual; p>erianth lobes 6 . . . 22. Pothos 
viii. Acorine,e. Rhizomatous plant. Leaves ensiform. 
Spathe none.23. Acorus 
1 . PISTIA, Linn. 
A stemle.ss, stoloniferous floating herb. Leaves se.ssile, obovate- 
obciineate, erect. Spathe shortly pedimcled, small; limb ovate, 
enclosing one flask-shaped pistil. Anthers 4, sessile, connate, in 
a basin-shaped spathel. Fruits membranous, few-seeded. Seeds 
oblong or obovoid. Species i. All the tropics; variable in size 
and shape of leaves. 
(i) P. stratiotes Linn. Sp. PL 963; Griff. Notulce, 12, 211; 
Bol. Mag. i. 4564; Hook. fit. F.B.I. vi. 497; Ridl. Mat. iii. 3. 
Root tufted, white. Leaves bright green, obovate-spathulate 
obcuneate, tip rounded, white beneath. Spathe tomentose, white, 
limb *5 in. long. Hah. Commonly cultivated by the Chinese to 
